An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
McCrea M, Iverson GL, McAllister TW, Hammeke TA, Powell MR, Barr WB, Kelly JP.McCrea M, et al. Among authors: barr wb.Clin Neuropsychol. 2009 Nov;23(8):1368-90. doi: 10.1080/13854040903074652.Clin Neuropsychol. 2009.PMID: 19882476Review.
McCrea M, Guskiewicz K, Randolph C, Barr WB, Hammeke TA, Marshall SW, Kelly JP.McCrea M, et al. Among authors: barr wb.Neurosurgery. 2009 Nov;65(5):876-82; discussion 882-3. doi: 10.1227/01.NEU.0000350155.89800.00.Neurosurgery. 2009.PMID: 19834399Clinical Trial.
Nelson LD, Guskiewicz KM, Barr WB, Hammeke TA, Randolph C, Ahn KW, Wang Y, McCrea MA.Nelson LD, et al. Among authors: barr wb.J Athl Train. 2016 Feb;51(2):142-52. doi: 10.4085/1062-6050-51.4.04. Epub 2016 Mar 14.J Athl Train. 2016.PMID: 26974186Free PMC article.